Sprinkler-head for automatic fire-extinguishers



(No Model.) G. E. HIBBARD.

SPRINKLER HEAD FOR AUTOMATIC FIRE EXTINGUISHBRS. k10,531,120

Patented Dec. 18,1894.

A mmmnn l/Cn asses:

` UNITED STATES GEORGE E. HIBBARD,

PATENT OFFICE.

OF CHICAGO, ILLINOIS.

SPRINKLR-HEAD FOR AUTOMATIC FIRE-EXTINGUISHERS.

SPECIFICATION forming part of Letters Patent No. 531,120, dated December18, 1 894. Application nea January' y13. 1s 93. serai No. 458.216. (Nomodel.)

To @ZZ whom it may concern.-

Be it known that I, GEORGE E. HIBBARD, a

citizen of the United States, residing at Ohieago, in the county of Cookand State of Illinois, have invented certain new and lusefulImprovements in Sprinkler-Heads for Automatic Fire-Extinguishers, ofwhich the .following is a specification, reference being had to theaccompanying drawings, which are lFig. 5 is a view showing amoditication.

The object of the present invention is to improve Atwo of the parts of asprinkler head, namely, the deector, or part against which the escapingwater strikes and by which it is deected in all directions, and thefusible element, or link, by which the head is held sealed nntilsubjected to a mined temperature.

y To these ends the invention consists in certain features of noveltythat are particularly pointed out in the claims hereinafter.

In the drawings, A represents one of the nozzles or discharge ends ofthe distributing pipes; B, the cap closing it; C, C levers fulcrumed toears A A', and bearing upon the cap B, and E is the link engaging theends c, c

of the levers for preventing them from spreading. This link consists oftwo plates d similarly corrugated so that one fits snugly against theother, the two being parallel. Each of the plates is provided with aslot d which extends quite to one of its ends and its other end isreiexed, as shown at d2, so that when the two plates are placedtogether, the retlexed end of each plate projects over the slotted endof the other plate. The meeting surfaces of the two plates are securedtogether by solder, and as an additional security against their slippingapart, fusible keys E are inserted beneath the retlexed ends d2. It willbe seen that being corrugated, these plates cannot move endwiseavithrelation to each other without at the same time moving laterally, andthis lateral movement will be impossible so long as the fusible keysremain certain predeterintact. Hence, these keys alone would hold thelink intact, but for the sake of greater security I prefer to solder theplates together.

I desire to have it understood that the invention is not limited to anyparticular number of corrugations. In Figs. 1,. 3 and 5 it yis shownwith transverse corrugations throughout its entire length, while in Fig.4 the number of its corrugations is reduced to a minimum. Y

The slot may be carried far enough to allow the passage ot both leversO, or a separate opening may be made for one of said levers as shown byFig. 5. By corrugating the plates, the solder joint between them isrelieved ot much o the strain, and the keys make it impossible for theparts to separate so long as they (the keys) remain intact, even if saidsolder joint should give way.

VFrom the frame or yoke F projects a stem G, having a sharp point g anda shoulder g. Upon the cylindrical part of this stem lits a disk H,which is provided with a central opening and a number of slits hradiating there from for enabling it to be slipped past the shoulder gThe tongues resulting from these slits yield as they pass the shoulderand regain their original shapes after they have passed it.

I is the detiector having in its top side a cirf cular rabbet in whichthe disk H tits, said disk being secured therein by upsetting the metalforming the margin of the rabbet and causing it to overlap the marginofthe disk. The detlector has in its top side a conical concavity whichautomatically centers it upon the point of the stem G as soon as theforce ot` the water comes against it, there being a slight lost motionbetween the detlector and its stem, so that when in operation the diskis clear of the flange and servessimply as a guide for maintaining thedelector in proper position. The under side of the deflector is of ageneral conical shape, and has grooves and depressions which aresubstantially spiral, so that the force of the Water causes it torotate. This improved delector is applicable to heads of everyconstruction, and the improved link is applicable to all heads soorganized that they are held sealed by a fusible link or similarelement.

Having thus described my invention, what I IOO claim as new therein, anddesire to secure by Letters Patent, is-

1. As a new article of manufacture, a link for sprinkler heads, made upof two corrugated plates placed parallel to each other, each having apart overlapping the other, and fusi ble keys inserted beneath saidoverlapping parts, substantially as set forth.

2. As a new article of manufacture, a link for sprinkler heads made upof two corrugated plates placed parallel to each other, each of saidplates having one of its ends reilexed so as to overlap the other plate,and fusible keys inserted beneath said reflexed ends, substantially asset forth.

3. As a new article of manufacture, a link for sprinkler heads made upof two corrugated plates placed parallel to each other, each of saidplates having a slot extending to one of its ends and having its otherend refiexed so as to overlap the other plate, and fusible keys insertedbeneath said retlexed ends, the meeting faces of the plates beingsoldered, substantially as set forth.

4. In a sprinkler head, the combination of a frame, a pointed sternhaving a shoulder, a disk having a central opening and slits radiatingtherefrom, said disk iitting loosely upon said stem, above the shoulder,and a delector havingin its top side a conical depression forming abearing for the point of the stem, and having also a circular rabbet inwhich said disk lits, the metal forming the margin of the rabbet beingturned over the edge of the disk, substantially as set forth.

GEORGE E. HIB BART).

Witnesses:

L. M. HOPKINS, J. IIALPENNY.

